Go Back   TeamTalk > Maintenance Tips, How-tos and Refurbishing Topics > Trailers

Reply
 
Thread Tools Display Modes
  #1  
Old 11-18-2014, 10:05 AM
etduc's Avatar
etduc etduc is online now
MC Fanatic
 
Join Date: Jul 2004
Boat: Mastercraft Prostar 205
Location: Looking for a windshield
Posts: 870
tire load rating question

I was towing the boat, on a single axle trailer. The tires are rated at 1850 lbs. (tires are 4 years old, trailer was stored inside, so tires are like new) I assume, two tires would be 3700 lbs capable. The boat and trailer weight is approx. 3600 lbs.

I notice towing, the trailer tire side walls, were flexing quite a bit. (Bouncy, Bouncy) Been awhile, since I towed a single axle. So, is this normal?

I typically tow the boat, 2+ hours to water...so towing tires are important. Any thoughts?
Should I go up one level, to 2250 lbs tires?
__________________
Ayyyy!

1994 RED Mastercraft 205, Chevy 5.7 TBI.
Reply With Quote
  #2  
Old 11-18-2014, 10:29 AM
thatsmrmastercraft's Avatar
thatsmrmastercraft thatsmrmastercraft is offline
MC Master Poster
 
Join Date: Sep 2008
Boat: 1977 Stars & Stripes
Location: St. Paul, MN
Posts: 15,164
Radial sidewalls have more flex than the old bias tires. Be sure to have your tires filled to the max pressure as you are needing everything your current tires have. Low tire pressure will cause an increase in sidewall flexing. What size and load range tire are you running?

Another factor to consider is worn springs will bounce more and cause more sidewall flexing.
__________________
Peter

SPECIAL PRICE
ST205/75R15 KENDA LOADSTAR ON 15X5 WHITE SPOKE WHEEL, BALANCED & DELIVERED - $125 EACH


Tandem Axle Packages Starting at $569 - 4 Aluminum wheels, 4 ST205/75R14 tires, mount & balance.
Single Axle Package Starting at $319 - 2 Aluminum wheels, 2 ST205/75R14 tires, mount & balance.

CARBURETOR REBUILDING - $125 + PARTS
LED lights, Hubs, Spare Tire Carriers, Chrome & Powder Coated Lug Nuts

PM or email me tiresplease@gmail.com
*** FREE DELIVERY ON ALL ORDERS ***
Reply With Quote
  #3  
Old 11-18-2014, 10:58 AM
etduc's Avatar
etduc etduc is online now
MC Fanatic
 
Join Date: Jul 2004
Boat: Mastercraft Prostar 205
Location: Looking for a windshield
Posts: 870
Quote:
Originally Posted by thatsmrmastercraft View Post
Radial sidewalls have more flex than the old bias tires. Be sure to have your tires filled to the max pressure as you are needing everything your current tires have. Low tire pressure will cause an increase in sidewall flexing. What size and load range tire are you running?

Another factor to consider is worn springs will bounce more and cause more sidewall flexing.
ST225/75R -C running @ 40-42 psi (sidewall shows 44 psi max) Chinese mfg
__________________
Ayyyy!

1994 RED Mastercraft 205, Chevy 5.7 TBI.
Reply With Quote
  #4  
Old 11-18-2014, 11:20 AM
thatsmrmastercraft's Avatar
thatsmrmastercraft thatsmrmastercraft is offline
MC Master Poster
 
Join Date: Sep 2008
Boat: 1977 Stars & Stripes
Location: St. Paul, MN
Posts: 15,164
I always recommend filling tires to their max pressure. Most tires are being made overseas now, and plenty of good ones. I would go up to a load range D or E if it were mine. I prefer to have a little extra capacity. The heavier ply tires will have a stiffer sidewall and you will see less flex.
__________________
Peter

SPECIAL PRICE
ST205/75R15 KENDA LOADSTAR ON 15X5 WHITE SPOKE WHEEL, BALANCED & DELIVERED - $125 EACH


Tandem Axle Packages Starting at $569 - 4 Aluminum wheels, 4 ST205/75R14 tires, mount & balance.
Single Axle Package Starting at $319 - 2 Aluminum wheels, 2 ST205/75R14 tires, mount & balance.

CARBURETOR REBUILDING - $125 + PARTS
LED lights, Hubs, Spare Tire Carriers, Chrome & Powder Coated Lug Nuts

PM or email me tiresplease@gmail.com
*** FREE DELIVERY ON ALL ORDERS ***
Reply With Quote
  #5  
Old 11-18-2014, 11:34 AM
mikeg205's Avatar
mikeg205 mikeg205 is online now
Moderator
 
Join Date: Aug 2011
Boat: 1995 Pro Star 205 5.7 Liter
Location: Plainfield - Joliet, IL
Posts: 11,661
Send a message via Skype™ to mikeg205
Quote:
Originally Posted by thatsmrmastercraft View Post
Radial sidewalls have more flex than the old bias tires. Be sure to have your tires filled to the max pressure as you are needing everything your current tires have. Low tire pressure will cause an increase in sidewall flexing. What size and load range tire are you running?

Another factor to consider is worn springs will bounce more and cause more sidewall flexing.
I changed my springs and my trailer traveled completely differently. It's sits up a bit higher and no bouncing at all.
__________________
...A bad day water skiing still beats a good day at work...1995 Pro Star 205....
Reply With Quote
  #6  
Old 11-18-2014, 01:28 PM
paco_06's Avatar
paco_06 paco_06 is online now
TT Enthusiast
 
Join Date: Aug 2014
Boat: 1985 stars&stripes
Location: southeast
Posts: 279
I put load range D on my single axle. Made a ton of difference, no sidewall flex. But it pulled good otherwise, maybe like Mike says, may need some springs also if it bounces a lot.
Reply With Quote
  #7  
Old 11-18-2014, 02:35 PM
etduc's Avatar
etduc etduc is online now
MC Fanatic
 
Join Date: Jul 2004
Boat: Mastercraft Prostar 205
Location: Looking for a windshield
Posts: 870
Thanks guys. I'll probably go up to D rating. Then go from there.
__________________
Ayyyy!

1994 RED Mastercraft 205, Chevy 5.7 TBI.
Reply With Quote
  #8  
Old 11-18-2014, 04:17 PM
thatsmrmastercraft's Avatar
thatsmrmastercraft thatsmrmastercraft is offline
MC Master Poster
 
Join Date: Sep 2008
Boat: 1977 Stars & Stripes
Location: St. Paul, MN
Posts: 15,164
Plenty of D and E rated tires out there. Consider how much gear you carry in your boat when you make your decision.

PM sent.
__________________
Peter

SPECIAL PRICE
ST205/75R15 KENDA LOADSTAR ON 15X5 WHITE SPOKE WHEEL, BALANCED & DELIVERED - $125 EACH


Tandem Axle Packages Starting at $569 - 4 Aluminum wheels, 4 ST205/75R14 tires, mount & balance.
Single Axle Package Starting at $319 - 2 Aluminum wheels, 2 ST205/75R14 tires, mount & balance.

CARBURETOR REBUILDING - $125 + PARTS
LED lights, Hubs, Spare Tire Carriers, Chrome & Powder Coated Lug Nuts

PM or email me tiresplease@gmail.com
*** FREE DELIVERY ON ALL ORDERS ***
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


All times are GMT -4. The time now is 02:39 PM.